*{
    margin: 0px;
    padding: 0px;
}
ul{
    list-style: none;
}
a{
    text-decoration: none;
}
.nav_hover{
    background: #1A3B4B;
    color: white;
}
.head_title{
    width: 100%;
    height: 20px;
    border-bottom: 1px solid gainsboro;
    position: relative;
}
.head_title ul{
    width: 300px;
    height: 20px;
    position: absolute;
    left: 900px;
}
.head_title>ul>li{
    width: 100px;
    height: 20px;
    display: inline-block;
    text-align: center;
}
.head_title>ul>li>a{
    font-size: 12px;
    line-height: 20px;
}
.line1{
    height: 16px;
    border-left: 1px solid black;
    position: absolute;
    left: 999px;
    top: 2px;
}
.line2{
    height: 16px;
    border-left: 1px solid black;
    position: absolute;
    left: 1095px;
    top: 2px;
}
.head{
    height: 72px;
    width: 100%;
    position: relative;
}
.head>img{
    position: absolute;
    left: 100px;
    top: 15px;
}
.head>ul{
    height: 60px;
    width: 600px;
    position: absolute;
    left: 600px;
    top: 12px;
}
.head>ul li{
    width: 100px;
    height: 60px;
    display: inline-block;
    text-align: center;
}
.head>ul li a{
    line-height: 60px;
    display: block;
    width: 100px;
    height: 60px;
    font-size: 20px;
    color: #a2a2a2;
}
.head>span{
    width: 8px;
    height: 8px;
    border-radius: 4px;
    background: red;
    display: block;
    position: absolute;
    left: 775px;
    top: 24px;
}
.lunbo{
    width: 100%;
    height: 420px;
    position: relative;
    background: url("../img/banner_bg_02.jpg");
    overflow: hidden;
}
.lunbo .neirong{
    width: 1000%;
    height: 420px;
    position: absolute;
    left: 0;
}
.lunbo>ul{
    width: 200px;
    height: 20px;
    position: relative;
    top: 380px;
    left: 600px;
}
.lunbo>ul li{
    display: inline-block;
    width: 16px;
    height: 16px;
    margin-right: 0px;
    border-radius: 10px;
    background: white;
    border: 2px solid grey;
    box-shadow: 0 0 5px #666666;
    cursor: pointer;
}
.lunbo #left{
    display: inline-block;
    width: 40px;
    height: 100px;
   background: url("../img/ban_pre.png");
    position: absolute;
    top: 160px;
    left: 50px;
    cursor: pointer;
    opacity: 0.2;
}
.lunbo #right{
    display: inline-block;
    width: 40px;
    height: 100px;
    background: url("../img/ban_next.png");
    position: absolute;
    top: 160px;
    left: 1250px;
    cursor: pointer;
    opacity: 0.2;
}
.lunbo #left:hover,.lunbo #right:hover{
    opacity: 0.5;
}
.lunbo .neirong>a{
    display: inline-block;
    width: 10%;
    height: 420px;
    position: relative;
}
.lunbo .neirong a .text{
    width: 400px;
    height: 204px;
    position: absolute;
    top: 100px;
    left: 280px;
    opacity: 0;
    transition: 0.7s all;
}
.lunbo .neirong a .img{
    position: absolute;
    top: 20px;
    left: 820px;
    opacity: 0;
    transition: 1s all;
}
.api{
    width: 100%;
    height: 100px;
    position: relative;
    background: #2F383D;
}
.shenqing{
    width: 100%;
    height: 146px;
    position: relative;
    background: gainsboro;
}
.nengli{
    width: 100%;
    height: 548px;
}